EP 0643468 A1 19950315 - Methods and apparatus for producing dynamo-electric machine armatures with improved balance.
Title (en)
Methods and apparatus for producing dynamo-electric machine armatures with improved balance.
Title (de)
Verfahren und Vorrichtung zur Herstellung von Ankern mit verbesserter Auswuchtung für dynamoelektrische Maschine.
Title (fr)
Procédé et appareil pour la production d'armature à équilibrage amélioré pour machine dynamo-électrique.
Publication
Application
Priority
- US 11385293 A 19930830
- US 19271994 A 19940207
Abstract (en)
Armatures for dynamo-electric machines are balanced during manufacture by measuring the unbalance of the armature assembly prior to winding the coils on the armature. The numbers of turns of wire in at least some of the coils subsequently wound on the armature are then adjusted so that the unbalance of the resulting coils compensates for the unbalance of the armature prior to coil winding. Alternatively, one or more extra turns of wire that are short-circuited at the commutator may be added to help balance the armature. In addition, masses may be added to the armature to ensure that it is balanced dynamically as well as statically. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
H02K 15/09 (2006.01); H02K 15/16 (2006.01); H02K 23/30 (2006.01)
CPC (source: EP US)
H02K 15/09 (2013.01 - EP US); H02K 15/165 (2013.01 - EP US); H02K 23/30 (2013.01 - EP US)
Citation (search report)
- [Y] US 1976588 A 19341009 - THEARLE ERNEST L
- [XA] EP 0484953 A2 19920513 - ASMO CO LTD [JP]
- [A] DE 3005423 A1 19810820 - HOFMANN MASCHF DIONYS [DE]
- [XY] DATABASE WPI Section EI Week 7726, Derwent World Patents Index; Class V06, AN 77-F4093Y
- [YA] PATENT ABSTRACTS OF JAPAN vol. 17, no. 65 (E - 1317) 9 February 1993 (1993-02-09)
Designated contracting state (EPC)
CH DE ES FR GB IT LI NL
DOCDB simple family (publication)
US 5576585 A 19961119; CA 2130697 A1 19950301; EP 0643468 A1 19950315; US 5639044 A 19970617
DOCDB simple family (application)
US 19271994 A 19940207; CA 2130697 A 19940823; EP 94112259 A 19940805; US 68932096 A 19960806